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4 Heol Y Dderwen, Nantgarw, Cardiff, CF15 7UJ

Estimated value

£221,000

  • Since the 2023 sale (£127,000)+74%
  • Against CF15 7UJ's recent median (£150,000)+47%

Newest record on this page: March 2025. Land Registry and EPC registers update monthly, so this page can trail them by 2–3 months.

Learn about this valuation
Property type
Semi-detached
Habitable rooms
4
From EPC
Floor area
89 m²
958 sq ft
Energy rating
D
Score 68
Council tax
Band C
Tenure
Owner Occupied
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Valuation

About this valuation

How the figure is worked out and what it's based on. If you know this home, you can tell other visitors what you think it's worth.

Our estimate

£221,000

  • Against its 2023 sale (£127,000)+74%
  • Against CF15 7UJ's recent median (£150,000)+47%

Your note and figure are shown publicly on this page.

How the estimate is made

The estimate for 4 Heol Y Dderwen is modelled from its 89 m² EPC floor area, its 1 recorded sale and recent sales of comparable homes in CF15 7UJ. It is an automated estimate, not a survey or mortgage valuation: condition, layout and improvements that aren't on record can move the real figure either way.

What it's based on

  • Floor area

    89 m² from the EPC lodged in March 2025

  • Sales of this home

    1 sale recorded, the latest in 2023

  • Recent sales in CF15 7UJ

    5 sales, median £150,000 (2022–2015)

This page or the full report?

DataThis pageFull report
SalesLatest sale shown: July 2023Latest available records, read when you order
ValuationEstimate from the last refreshAnalysed against comparable sales
PlanningNone on this homeFull history, plus nearby schemes
Flood riskNot shownIncluded
Price

Sales history & valuation

Every recorded sale of this home, how its price has moved, and what neighbouring properties have sold for.

4 Heol Y Dderwen valuation sits well clear of the typical sold price in this postcode.

Sales timeline

  1. 6 July 2023Most recent

    £127,000

Median price across the last 5 sales in CF15 7UJ: £150,000 (2022–2015).

Risks

What this page doesn't show

Nothing is flagged from the data on this page, but these checks are only run in the report. The detail, evidence and what to ask about it are in the Risks Report.
  • Flood risk from rivers, sea and surface waterIn report
  • Subsidence and ground-stability signalsIn report
  • Refusals, enforcement and big schemes nearbyIn report

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Overview

About 4 Heol Y Dderwen

A plain-English summary derived from public records, EPC certificates, sold prices and local data.

4 Heol Y Dderwen is a semi-detached house in Nantgarw, Cardiff, Cardiff (CF15 7UJ). It has a recorded floor area of 89 m² (around 958 sq ft), construction records dating it to 1950-1966 and council tax band C. The latest certificate (March 2025) shows a D (score 68), on the cusp of jumping into the C band. When first surveyed in March 2023 the rating was F, the property has climbed 2 bands since. Between certificates, roof efficiency went from Poor to Good, window efficiency went from Very Poor to Good and hot-water efficiency went from Very Poor to Good. The recommended improvements would lift it to B (score 86), a 2-band jump.

Today's modelled estimate of £221,000 sits 74% above the 2023 sale of £127,000. Sold July 2023 for £127,000.

Before you decide

Everything you need to know about 4 Heol Y Dderwen

The true value, the hidden risks and the full sale history, in one report.

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Preview of the full property report

The data behind every report

  • HM Land Registry, source of sold price history
  • Department for Education, source of schools data
  • Police.uk, source of crime statistics
  • Department for Transport, source of stations and transport links
  • Environment Agency, source of flood risk data
  • Department for Environment, Food & Rural Affairs, source of road noise data
  • PlanIt, source of planning application records
Energy

Energy performance

Every EPC certificate filed against this property — current rating, recorded improvements, and where there's headroom to reach a higher band.

Recommended upgrades on file would lift this property by multiple EPC bands.

Current Certificate(1 of 2)
Mar 2025

EPC Rating

A
B
C
D
D68
E
F
G
Main Heating
Gas
Main Fuel
Gas
Hot Water
Good
Windows
Good
CO2 Emissions
3.4 t/year
Occupancy
Owner Occupied

Certificate validity

Valid until 17 March 2035

8 years remaining

Property Improvements

Changes detected from historical EPC data

Mar 2025from Mar 2023
EPC improved fromF31toD68
Main Fuel
Solid FuelGas

Switched from solid fuel to cleaner energy source

Heating Controls
ThermostatFull

Heating controls upgraded for better temperature management

Hot Water
Main (No Stat)Main System

Hot water system upgraded

Windows
Partial DoubleFull Double

Windows upgraded, improving insulation

Roof Insulation
PartialInsulated

Roof insulation improved

Low Energy Lighting
64%100%

More low energy lighting installed

Planning

Planning history

Applications and permits filed against 4 Heol Y Dderwen, Nantgarw, Cardiff, CF15 7UJ, sourced from the PlanIt planning register.

4 Heol Y Dderwen has no planning applications on record.

1

But the area is active

1 notable application nearby — larger schemes and conversions that could reshape the street. The report maps them all.

On the street

Versus other Heol Y Dderwen homes

Four headline reads against 17 similar houses on this street, drawn from the latest EPC and Land Registry data.

Years Held for 4 Heol Y Dderwen lags the street by a wide margin.

Price per m²

£1,427

Street avg £1,545

Strongly below

Floor Area

89 m²

Street avg 93 m²

Below

Habitable Rooms

4 rooms

Street avg 5 rooms

Below

CO₂ Emissions

3.4 t/year

Street avg 3.8 t/year

Above
Area

The neighbourhood at a glance

A condensed read of the local area. Each tile links through to the full breakdown on the Cardiff district page.
Full Cardiff report

Crime

85/mo

Steady year-on-year across the wider district.

Nearest stop

0.0 km

Heol-y-Dderwen — bus stop.

Nearest stops

  • Heol-y-DderwenBus stop32m
  • TawelfrynBus stop157m
  • Heol EdwardsBus stop186m
  • Parc-y-nantBus stop195m

Most reported crime locally

  • Violence & Sexual Offences366 reports33%
  • Anti-social Behaviour150 reports14%
  • Public Order141 reports13%
  • Shoplifting104 reports9%

Go deeper on the local area

A Local Area report breaks down crime, transport links, schools and air quality in depth.

SDL Surveying

Get a survey for this property

Level 2 HomeBuyer Report

Mid 20th centurySemi-Detached HouseEPC D

We've checked 10 risk factors against the available data for this property and believe a Level 2 HomeBuyer Report could be a suitable option for you.

From £545 · Includes VAT

Comparables

Similar properties nearby

A handful of close matches in the same postcode area, ranked by likeness on bedrooms, type and floor area.
£220k

1 Church Street, Taffs Well

CF15 7PG

3 bed
£223k

1 Castle Street, Taffs Well

CF15 7RL

2 bed1 bath
£227k

1 Anchor Street, Taffs Well

CF15 7RH

2 bed1 bath
£204k

1 Catherine Drive, Tongwynlais

CF15 7JT

£260k

1 Abbey Close, Taffs Well

CF15 7RS

£262k

1 Castell Coch View, Tongwynlais

CF15 7LA

2 bed1 bath
£275k

1 Beechwood Road, Taffs Well

CF15 7RZ

4 bed
£279k

1 Castle Road, Tongwynlais

CF15 7JQ

2 bed1 bath

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Method

How to read this page

Where every figure above comes from, how current it is and what it can't tell you.
Valuation method in detail
How the estimate is made
The estimate for 4 Heol Y Dderwen is modelled from its 89 m² EPC floor area, its 1 recorded sale and recent sales of comparable homes in CF15 7UJ. It is an automated estimate, not a survey or mortgage valuation: condition, layout and improvements that aren't on record can move the real figure either way.
Where sold prices come from
Sold prices are HM Land Registry Price Paid Data, which covers residential sales in England and Wales since 1995. 1 sale is recorded for 4 Heol Y Dderwen. Sales normally appear two to three months after completion, so the most recent ones take time to show up anywhere.
Reading the EPC
Energy Performance Certificates rate homes from A (most efficient) to G and last 10 years. The latest one for 4 Heol Y Dderwen was lodged in March 2025 at band D and is valid until March 2035. 2 certificates are on record, which shows how the home has changed.
Planning records
Planning applications are collected from local authority registers through PlanIt. None is matched to 4 Heol Y Dderwen. Councils sometimes file applications under a different address format, and applications on neighbouring land aren't listed here; the report covers both.
Area figures
Crime is police-recorded street-level data over the last 13 months, which places each incident at an approximate point. Schools and stops are measured in a straight line from CF15 7UJ.
Council tax band
4 Heol Y Dderwen is in council tax band C. Bands are set by the Valuation Office Agency from historic values (1 April 1991 in England, 1 April 2003 in Wales), not today's price; the amount you pay depends on the council's rate for the band.
FAQ

Common questions

The questions buyers, sellers and homeowners most often ask about 4 Heol Y Dderwen, Nantgarw, Cardiff, CF15 7UJ. Each answer is also embedded as structured data for search engines.

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